Seigo Oosawa has been granted 7 US patents while listed as an inventor at Denso . The first was granted in 2014 and the most recent in November 2025. Seigo Oosawa ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Seigo Oosawa in Kariya, JP.
Patents per Year Patents granted per year, 2014 to 2018 Bar chart with a peak of 2 patents in 2015. peak 2 2014: 1 patents 2014 2015: 2 patents 2015 2017: 1 patents 2017 2018: 1 patents 2018
Issued Patents All Time
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Showing 1–7 of 7 patents
Patent # Title Co-Inventors Date
12482714 Semiconductor device, semiconductor module, and method for manufacturing semiconductor device Yasushi Ookura 2025-11-25
12476163 Semiconductor device and semiconductor module Takahiro Nakano , Yasushi Ookura , Naohito Mizuno , YOSHIHIRO INUTSUKA 2025-11-18
10109727 Semiconductor device Kazuhiro Oyama , Yasushi Higuchi , Masaki Matsui , Youngshin Eum 2018-10-23
9634095 Semiconductor device and method for manufacturing the same Yutaka Tomatsu , Masahiro Ogino , Tomomi Oobayashi 2017-04-25
9171906 Semiconductor device having a trench gate structure and manufacturing method of the same Eiichi TAKETANI 2015-10-27
9136335 Semiconductor device having a trench gate structure and manufacturing method of the same Eiichi TAKETANI 2015-09-15
8841719 Semiconductor device and method for manufacturing the same Shoji Mizuno , Yutaka Tomatsu 2014-09-23
